| Dietary separation between co-occurring copepods in a food-limited tropical coral reef of the Sanya Bay |
| |
| 作者姓名： | 胡思敏 李涛 刘胜 黄晖 |
| |
| 作者单位： | 中国科学院热带海洋生物资源与生态重点实验室, 中国科学院南海海洋研究所, 广州 510301;广东省应用生物学重点实验室, 广州 510301;中国科学院热带海洋生物资源与生态重点实验室, 中国科学院南海海洋研究所, 广州 510301;中国科学院海南热带海洋生物实验站, 三亚 572000 |
| |
| 基金项目： | The Strategic Priority Research Program of Chinese Academy of Sciences under contract No. XDA13020102; the National Key Research and Development Program of China under contract No. 2016YFC0502800; the National Natural Science Foundation of China under contract No. 41806188; the Science and Technology Planning Project of Guangdong Province, China under contract No. 2017B030314052. |
| |
| 摘 要： | Food differentiation among coexistent species in the field is important strategy for copepods to acquire materials and maintain population stabilization.In situ diet analysis of co-occurring six copepod species in coral waters of the Sanya Bay was conducted using a PCR protocol based on 18 S ribosomal gene.Various prey organisms were uncovered,including dinoflagellate,diatom,green algae and plant,protozoa and metazoan.All these spatially coexisting six species showed different dietary diversity,with the food niche breadth(B)ranging from 1.00(Temora turbinate in morning)to 10.68(Calanopia elliptica in night).While food overlap between all these copepods were low,with the average value of the diet niche overlap index being approximately 0.09.Even temporally co-existing species sampled from the same time point fed on different groups of prey items with the food overlap index of 0.04 to 0.07 in midday and night but 0 in morning.As the most important dominant copepod in the Sanya Bay,Subeucalanus subcrassus seems to be capable to regulate its feeding,by exhibiting a rhythm of herbivorous feeding in midday and carnivorous feeding in morning and night,to better coordinate with other competitors for utilization of food resources.For most copepods,none of the prey items belonged to the dominant phytoplankton in the ambient water,indicating that copepod can better their survival by widening the choice of potential food resources in food limited environment.The dietary separation observed here might be important strategy for copepod to maintain population stabilization and thriving in the Sanya coastal waters.
|
| 关 键 词： | copepod food partitioning Sanya Bay coral reef ecosystem |
| 收稿时间： | 2019/2/19 0:00:00 |
Dietary separation between co-occurring copepods in a food-limited tropical coral reef of the Sanya Bay |
| |
| Hu Simin,Li Tao,Liu Sheng,Huang Hui.Dietary separation between co-occurring copepods in a food-limited tropical coral reef of the Sanya Bay[J].Acta Oceanologica Sinica,2020,39(4):65-72. |
| |
| Authors: | Hu Simin Li Tao Liu Sheng Huang Hui |
| |
| Institution: | 1.Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China2.Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China3.Tropical Marine Biological Research Station in Hainan, Chinese Academy of Sciences, Sanya 572000, China |
| |
| Abstract: | Food differentiation among coexistent species in the field is important strategy for copepods to acquire materials and maintain population stabilization. In situ diet analysis of co-occurring six copepod species in coral waters of the Sanya Bay was conducted using a PCR protocol based on 18S ribosomal gene. Various prey organisms were uncovered, including dinoflagellate, diatom, green algae and plant, protozoa and metazoan. All these spatially co-existing six species showed different dietary diversity, with the food niche breadth (B) ranging from 1.00 (Temora turbinate in morning) to 10.68 (Calanopia elliptica in night). While food overlap between all these copepods were low, with the average value of the diet niche overlap index being approximately 0.09. Even temporally co-existing species sampled from the same time point fed on different groups of prey items with the food overlap index of 0.04 to 0.07 in midday and night but 0 in morning. As the most important dominant copepod in the Sanya Bay, Subeucalanus subcrassus seems to be capable to regulate its feeding, by exhibiting a rhythm of herbivorous feeding in midday and carnivorous feeding in morning and night, to better coordinate with other competitors for utilization of food resources. For most copepods, none of the prey items belonged to the dominant phytoplankton in the ambient water, indicating that copepod can better their survival by widening the choice of potential food resources in food limited environment. The dietary separation observed here might be important strategy for copepod to maintain population stabilization and thriving in the Sanya coastal waters. |
| |
| Keywords: | copepod food partitioning Sanya Bay coral reef ecosystem |
| 本文献已被 CNKI 维普 万方数据 SpringerLink 等数据库收录！ |
| 点击此处可从《海洋学报(英文版)》浏览原始摘要信息 |
| 点击此处可从《海洋学报(英文版)》下载免费的PDF全文 |
|
